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id="VuAckcnZhf"><nav class="navbar"><div class="navbar-left-items"><div class="navbar-item"><a id="" href="https://github.com/KilledByAPixel/LittleJS" target="_blank">GitHub</a></div><div class="navbar-item"><a id="" href="https://killedbyapixel.github.io/LittleJS/examples/" target="_blank">Examples</a></div><div class="navbar-item"><a id="" href="https://github.com/KilledByAPixel/LittleJS/blob/main/FAQ.md" target="_blank">FAQ</a></div></div><div class="navbar-right-items"><div class="navbar-right-item"><button class="icon-button search-button" aria-label="open-search"><svg><use xlink:href="#search-icon"></use></svg></button></div><div class="navbar-right-item"><button class="icon-button theme-toggle" aria-label="toggle-theme"><svg><use class="theme-svg-use" xlink:href="#light-theme-icon"></use></svg></button></div><div class="navbar-right-item"><button class="icon-button font-size" aria-label="change-font-size"><svg><use xlink:href="#font-size-icon"></use></svg></button></div></div><nav></nav></nav></div><div class="toc-container"><div class="toc-content"><span class="bold">On this page</span><div id="eed4d2a0bfd64539bb9df78095dec881"></div></div></div><div class="body-wrapper"><div class="main-content"><div class="main-wrapper"><section><header><h1 id="UISystemPlugin-title" class="has-anchor"><span class="ancestors"><a href="UISystem.html">UISystem</a>.</span> UISystemPlugin</h1><div class="class-description"><p>UI System Global Object</p></div></header><article><div class="container-overview"><h2 id="constructor" class="has-anchor">Constructor</h2><h3 class="name has-anchor" id="UISystemPlugin"><span class="type-signature"></span>new UISystemPlugin<span class="signature">(context<span class="signature-attributes">opt</span>)</span></h3><div class="description"><p>Create the global UI system object</p></div><div class="method-member-container flex flex-col w-100 overflow-auto mt-20"><strong>Parameters:</strong><table class="params"><thead><tr><th>Name</th><th>Type</th><th>Attributes</th><th class="last">Description</th></tr></thead><tbody><tr><td class="name"><code>context</code></td><td class="type"><span class="param-type">CanvasRenderingContext2D</span></td><td class="attributes">&lt;optional><br></td><td class="description last"></td></tr></tbody></table></div><dl class="details"><div class="details-item-container"><dt class="tag-source bold">Source</dt><dd class="tag-source"><ul><li><a href="plugins_uiSystem.js.html">plugins/uiSystem.js</a>, <a href="plugins_uiSystem.js.html#line43">line 43</a></li></ul></dd></div></dl><div class="method-member-container flex flex-col w-100 overflow-auto mt-20"><strong>Example</strong><div class="rel"><pre class="prettyprint"><code>// create the ui plugin object new UISystemPlugin;</code></pre></div></div></div><h2 id="members" class="subsection-title has-anchor">Members</h2><h3 class="name has-anchor" id="activateOnPress"><span class="type-signature"></span>activateOnPress<span class="type-signature"></span></h3><b class="subsection-title">Properties</b><div class="allow-overflow"><table class="props"><thead><tr><th>Type</th><th class="last">Description</th></tr></thead><tbody><tr><td class="type"><span class="param-type">boolean</span></td><td class="description last"><p>Activate when mouse is pressed down instead of clicked</p></td></tr></tbody></table></div><dl class="details"><div class="details-item-container"><dt class="tag-source bold">Source</dt><dd class="tag-source"><ul><li><a href="plugins_uiSystem.js.html">plugins/uiSystem.js</a>, <a href="plugins_uiSystem.js.html#line58">line 58</a></li></ul></dd></div></dl><h3 class="name has-anchor" id="activeObject"><span class="type-signature"></span>activeObject<span class="type-signature"></span></h3><b class="subsection-title">Properties</b><div class="allow-overflow"><table class="props"><thead><tr><th>Type</th><th class="last">Description</th></tr></thead><tbody><tr><td class="type"><span class="param-type">UIObject</span></td><td class="description last"><p>Object user is currently interacting with</p></td></tr></tbody></table></div><dl class="details"><div class="details-item-container"><dt class="tag-source bold">Source</dt><dd class="tag-source"><ul><li><a href="plugins_uiSystem.js.html">plugins/uiSystem.js</a>, <a href="plugins_uiSystem.js.html#line114">line 114</a></li></ul></dd></div></dl><h3 class="name has-anchor" id="confirmDialog"><span class="type-signature"></span>confirmDialog<span class="type-signature"></span></h3><b class="subsection-title">Properties</b><div class="allow-overflow"><table class="props"><thead><tr><th>Type</th><th class="last">Description</th></tr></thead><tbody><tr><td class="type"><span class="param-type">UIObject</span></td><td class="description last"><p>Current confirm menu being shown</p></td></tr></tbody></table></div><dl class="details"><div class="details-item-container"><dt class="tag-source bold">Source</dt><dd class="tag-source"><ul><li><a href="plugins_uiSystem.js.html">plugins/uiSystem.js</a>, <a href="plugins_uiSystem.js.html#line120">line 120</a></li></ul></dd></div></dl><h3 class="name has-anchor" id="defaultButtonColor"><span class="type-signature"></span>defaultButtonColor<span class="type-signature"></span></h3><b class="subsection-title">Properties</b><div class="allow-overflow"><table class="props"><thead><tr><th>Type</th><th class="last">Description</th></tr></thead><tbody><tr><td class="type"><span class="param-type">Color</span></td><td class="description last"><p>Default button color for UI elements</p></td></tr></tbody></table></div><dl class="details"><div class="details-item-container"><dt class="tag-source bold">Source</dt><dd class="tag-source"><ul><li><a href="plugins_uiSystem.js.html">plugins/uiSystem.js</a>, <a href="plugins_uiSystem.js.html#line66">line 66</a></li></ul></dd></div></dl><h3 class="name has-anchor" id="defaultColor"><span class="type-signature"></span>defaultColor<span class="type-signature"></span></h3><b class="subsection-title">Properties</b><div class="allow-overflow"><table class="props"><thead><tr><th>Type</th><th class="last">Description</th></tr></thead><tbody><tr><td class="type"><span class="param-type">Color</span></td><td class="description last"><p>Default fill color for UI elements</p></td></tr></tbody></table></div><dl class="details"><div class="details-item-container"><dt class="tag-source bold">Source</dt><dd class="tag-source"><ul><li><a href="plugins_uiSystem.js.html">plugins/uiSystem.js</a>, <a href="plugins_uiSystem.js.html#line60">line 60</a></li></ul></dd></div></dl><h3 class="name has-anchor" id="defaultCornerRadius"><span class="type-signature"></span>defaultCornerRadius<span class="type-signature"></span></h3><b class="subsection-title">Properties</b><div class="allow-overflow"><table class="props"><thead><tr><th>Type</th><th class="last">Description</th></tr></thead><tbody><tr><td class="type"><span class="param-type">number</span></td><td class="description last"><p>Default rounded rect corner radius for UI elements</p></td></tr></tbody></table></div><dl class="details"><div class="details-item-container"><dt class="tag-source bold">Source</dt><dd class="tag-source"><ul><li><a href="plugins_uiSystem.js.html">plugins/uiSystem.js</a>, <a href="plugins_uiSystem.js.html#line76">line 76</a></li></ul></dd></div></dl><h3 class="name has-anchor" id="defaultDisabledColor"><span class="type-signature"></span>defaultDisabledColor<span class="type-signature"></span></h3><b class="subsection-title">Properties</b><div class="allow-overflow"><table class="props"><thead><tr><th>Type</th><th class="last">Description</th></tr></thead><tbody><tr><td class="type"><span class="param-type">Color</span></td><td class="description last"><p>Default color for disabled UI elements</p></td></tr></tbody></table></div><dl class="details"><div class="details-item-container"><dt class="tag-source bold">Source</dt><dd class="tag-source"><ul><li><a href="plugins_uiSystem.js.html">plugins/uiSystem.js</a>, <a href="plugins_uiSystem.js.html#line70">line 70</a></li></ul></dd></div></dl><h3 class="name has-anchor" id="defaultFont"><span class="type-signature"></span>defaultFont<span class="type-signature"></span></h3><b class="subsection-title">Properties</b><div class="allow-overflow"><table class="props"><thead><tr><th>Type</th><th class="last">Description</th></tr></thead><tbody><tr><td class="type"><span class="param-type">string</span></td><td class="description last"><p>Default font for UI elements</p></td></tr></tbody></table></div><dl class="details"><div class="details-item-container"><dt class="tag-source bold">Source</dt><dd class="tag-source"><ul><li><a href="plugins_uiSystem.js.html">plugins/uiSystem.js</a>, <a href="plugins_uiSystem.js.html#line80">line 80</a></li></ul></dd></div></dl><h3 class="name has-anchor" id="defaultGradientColor"><span class="type-signature"></span>defaultGradientColor<span class="type-signature"></span></h3><b class="subsection-title">Properties</b><div class="allow-overflow"><table class="props"><thead><tr><th>Type</th><th class="last">Description</th></tr></thead><tbody><tr><td class="type"><span class="param-type">Color</span></td><td class="description last"><p>Uses a gradient fill combined with color</p></td></tr></tbody></table></div><dl class="details"><div class="details-item-container"><dt class="tag-source bold">Source</dt><dd class="tag-source"><ul><li><a href="plugins_uiSystem.js.html">plugins/uiSystem.js</a>, <a href="plugins_uiSystem.js.html#line72">line 72</a></li></ul></dd></div></dl><h3 class="name has-anchor" id="defaultHoverColor"><span class="type-signature"></span>defaultHoverColor<span class="type-signature"></span></h3><b class="subsection-title">Properties</b><div class="allow-overflow"><table class="props"><thead><tr><th>Type</th><th class="last">Description</th></tr></thead><tbody><tr><td class="type"><span class="param-type">Color</span></td><td class="description last"><p>Default hover color for UI elements</p></td></tr></tbody></table></div><dl class="details"><div class="details-item-container"><dt class="tag-source bold">Source</dt><dd class="tag-source"><ul><li><a href="plugins_uiSystem.js.html">plugins/uiSystem.js</a>, <a href="plugins_uiSystem.js.html#line68">line 68</a></li></ul></dd></div></dl><h3 class="name has-anchor" id="defaultLineColor"><span class="type-signature"></span>defaultLineColor<span class="type-signature"></span></h3><b class="subsection-title">Properties</b><div class="allow-overflow"><table class="props"><thead><tr><th>Type</th><th class="last">Description</th></tr></thead><tbody><tr><td class="type"><span class="param-type">Color</span></td><td class="description last"><p>Default outline color for UI elements</p></td></tr></tbody></table></div><dl class="details"><div class="details-item-container"><dt class="tag-source bold">Source</dt><dd class="tag-source"><ul><li><a href="plugins_uiSystem.js.html">plugins/uiSystem.js</a>, <a href="plugins_uiSystem.js.html#line62">line 62</a></li></ul></dd></div></dl><h3 class="name has-anchor" id="defaultLineWidth"><span class="type-signature"></span>defaultLineWidth<span class="type-signature"></span></h3><b class="subsection-title">Properties</b><div class="allow-overflow"><table class="props"><thead><tr><th>Type</th><th class="last">Description</th></tr></thead><tbody><tr><td class="type"><span class="param-type">number</span></td><td class="description last"><p>Default line width for UI elements</p></td></tr></tbody></table></div><dl class="details"><div class="details-item-container"><dt class="tag-source bold">Source</dt><dd class="tag-source"><ul><li><a href="plugins_uiSystem.js.html">plugins/uiSystem.js</a>, <a href="plugins_uiSystem.js.html#line74">line 74</a></li></ul></dd></div></dl><h3 class="name has-anchor" id="defaultShadowBlur"><span class="type-signature"></span>defaultShadowBlur<span class="type-signature"></span></h3><b class="subsection-title">Properties</b><div class="allow-overflow"><table class="props"><thead><tr><th>Type</th><th class="last">Description</th></tr></thead><tbody><tr><td class="type"><span class="param-type">number</span></td><td class="description last"><p>Size of shadow blur</p></td></tr></tbody></table></div><dl class="details"><div class="details-item-container"><dt class="tag-source bold">Source</dt><dd class="tag-source"><ul><li><a href="plugins_uiSystem.js.html">plugins/uiSystem.js</a>, <a href="plugins_uiSystem.js.html#line90">line 90</a></li></ul></dd></div></dl><h3 class="name has-anchor" id="defaultShadowColor"><span class="type-signature"></span>defaultShadowColor<span class="type-signature"></span></h3><b class="subsection-title">Properties</b><div class="allow-overflow"><table class="props"><thead><tr><th>Type</th><th class="last">Description</th></tr></thead><tbody><tr><td class="type"><span class="param-type">Color</span></td><td class="description last"><p>Color for shadow</p></td></tr></tbody></table></div><dl class="details"><div class="details-item-container"><dt class="tag-source bold">Source</dt><dd class="tag-source"><ul><li><a href="plugins_uiSystem.js.html">plugins/uiSystem.js</a>, <a href="plugins_uiSystem.js.html#line88">line 88</a></li></ul></dd></div></dl><h3 class="name has-anchor" id="defaultShadowOffset"><span class="type-signature"></span>defaultShadowOffset<span class="type-signature"></span></h3><b class="subsection-title">Properties</b><div class="allow-overflow"><table class="props"><thead><tr><th>Type</th><th class="last">Description</th></tr></thead><tbody><tr><td class="type"><span class="param-type">Vector2</span></td><td class="description last"><p>Offset of shadow blur</p></td></tr></tbody></table></div><dl class="details"><div class="details-item-container"><dt class="tag-source bold">Source</dt><dd class="tag-source"><ul><li><a href="plugins_uiSystem.js.html">plugins/uiSystem.js</a>, <a href="plugins_uiSystem.js.html#line92">line 92</a></li></ul></dd></div></dl><h3 class="name has-anchor" id="defaultSoundClick"><span class="type-signature"></span>defaultSoundClick<span class="type-signature"></span></h3><b class="subsection-title">Properties</b><div class="allow-overflow"><table class="props"><thead><tr><th>Type</th><th class="last">Description</th></tr></thead><tbody><tr><td class="type"><span class="param-type">Sound</span></td><td class="description last"><p>Default sound when interactive UI element is clicked</p></td></tr></tbody></table></div><dl class="details"><div class="details-item-container"><dt class="tag-source bold">Source</dt><dd class="tag-source"><ul><li><a href="plugins_uiSystem.js.html">plugins/uiSystem.js</a>, <a href="plugins_uiSystem.js.html#line86">line 86</a></li></ul></dd></div></dl><h3 class="name has-anchor" id="defaultSoundPress"><span class="type-signature"></span>defaultSoundPress<span class="type-signature"></span></h3><b class="subsection-title">Properties</b><div class="allow-overflow"><table class="props"><thead><tr><th>Type</th><th class="last">Description</th></tr></thead><tbody><tr><td class="type"><span class="param-type">Sound</span></td><td class="description last"><p>Default sound when interactive UI element is pressed</p></td></tr></tbody></table></div><dl class="details"><div class="details-item-container"><dt class="tag-source bold">Source</dt><dd class="tag-source"><ul><li><a href="plugins_uiSystem.js.html">plugins/uiSystem.js</a>, <a href="plugins_uiSystem.js.html#line82">line 82</a></li></ul></dd></div></dl><h3 class="name has-anchor" id="defaultSoundRelease"><span class="type-signature"></span>defaultSoundRelease<span class="type-signature"></span></h3><b class="subsection-title">Properties</b><div class="allow-overflow"><table class="props"><thead><tr><th>Type</th><th class="last">Description</th></tr></thead><tbody><tr><td class="type"><span class="param-type">Sound</span></td><td class="description last"><p>Default sound when interactive UI element is released</p></td></tr></tbody></table></div><dl class="details"><div class="details-item-container"><dt class="tag-source bold">Source</dt><dd class="tag-source"><ul><li><a href="plugins_uiSystem.js.html">plugins/uiSystem.js</a>, <a href="plugins_uiSystem.js.html#line84">line 84</a></li></ul></dd></div></dl><h3 class="name has-anchor" id="defaultTextColor"><span class="type-signature"></span>defaultTextColor<span class="type-signature"></span></h3><b class="subsection-title">Properties</b><div class="allow-overflow"><table class="props"><thead><tr><th>Type</th><th class="last">Description</th></tr></thead><tbody><tr><td class="type"><span class="param-type">Color</span></td><td class="description last"><p>Default text color for UI elements</p></td></tr></tbody></table></div><dl class="details"><div class="details-item-container"><dt class="tag-source bold">Source</dt><dd class="tag-source"><ul><li><a href="plugins_uiSystem.js.html">plugins/uiSystem.js</a>, <a href="plugins_uiSystem.js.html#line64">line 64</a></li></ul></dd></div></dl><h3 class="name has-anchor" id="defaultTextFitScale"><span class="type-signature"></span>defaultTextFitScale<span class="type-signature"></span></h3><b class="subsection-title">Properties</b><div class="allow-overflow"><table class="props"><thead><tr><th>Type</th><th class="last">Description</th></tr></thead><tbody><tr><td class="type"><span class="param-type">number</span></td><td class="description last"><p>Default scale to use for fitting text to object</p></td></tr></tbody></table></div><dl class="details"><div class="details-item-container"><dt class="tag-source bold">Source</dt><dd class="tag-source"><ul><li><a href="plugins_uiSystem.js.html">plugins/uiSystem.js</a>, <a href="plugins_uiSystem.js.html#line78">line 78</a></li></ul></dd></div></dl><h3 class="name has-anchor" id="hoverObject"><span class="type-signature"></span>hoverObject<span class="type-signature"></span></h3><b class="subsection-title">Properties</b><div class="allow-overflow"><table class="props"><thead><tr><th>Type</th><th class="last">Description</th></tr></thead><tbody><tr><td class="type"><span class="param-type">UIObject</span></td><td class="description last"><p>Top most object user is over</p></td></tr></tbody></table></div><dl class="details"><div class="details-item-container"><dt class="tag-source bold">Source</dt><dd class="tag-source"><ul><li><a href="plugins_uiSystem.js.html">plugins/uiSystem.js</a>, <a href="plugins_uiSystem.js.html#line116">line 116</a></li></ul></dd></div></dl><h3 class="name has-anchor" id="lastHoverObject"><span class="type-signature"></span>lastHoverObject<span class="type-signature"></span></h3><b class="subsection-title">Properties</b><div class="allow-overflow"><table class="props"><thead><tr><th>Type</th><th class="last">Description</th></tr></thead><tbody><tr><td class="type"><span class="param-type">UIObject</span></td><td class="description last"><p>Hover object at start of update</p></td></tr></tbody></table></div><dl class="details"><div class="details-item-container"><dt class="tag-source bold">Source</dt><dd class="tag-source"><ul><li><a href="plugins_uiSystem.js.html">plugins/uiSystem.js</a>, <a href="plugins_uiSystem.js.html#line118">line 118</a></li></ul></dd></div></dl><h3 class="name has-anchor" id="nativeHeight"><span class="type-signature"></span>nativeHeight<span class="type-signature"></span></h3><b class="subsection-title">Properties</b><div class="allow-overflow"><table class="props"><thead><tr><th>Type</th><th class="last">Description</th></tr></thead><tbody><tr><td class="type"><span class="param-type">number</span></td><td class="description last"><p>If set ui coords will be renormalized to this canvas height</p></td></tr></tbody></table></div><dl class="details"><div class="details-item-container"><dt class="tag-source bold">Source</dt><dd class="tag-source"><ul><li><a href="plugins_uiSystem.js.html">plugins/uiSystem.js</a>, <a href="plugins_uiSystem.js.html#line94">line 94</a></li></ul></dd></div></dl><h3 class="name has-anchor" id="navigationDelay"><span class="type-signature"></span>navigationDelay<span class="type-signature"></span></h3><b class="subsection-title">Properties</b><div class="allow-overflow"><table class="props"><thead><tr><th>Type</th><th class="last">Description</th></tr></thead><tbody><tr><td class="type"><span class="param-type">number</span></td><td class="description last"><p>Time between navigation inputs in seconds</p></td></tr></tbody></table></div><dl class="details"><div class="details-item-container"><dt class="tag-source bold">Source</dt><dd class="tag-source"><ul><li><a href="plugins_uiSystem.js.html">plugins/uiSystem.js</a>, <a href="plugins_uiSystem.js.html#line102">line 102</a></li></ul></dd></div></dl><h3 class="name has-anchor" id="navigationDirection"><span class="type-signature"></span>navigationDirection<span class="type-signature"></span></h3><b class="subsection-title">Properties</b><div class="allow-overflow"><table class="props"><thead><tr><th>Type</th><th class="last">Description</th></tr></thead><tbody><tr><td class="type"><span class="param-type">boolean</span></td><td class="description last"><p>should the navigation be horizontal, vertical, or both?</p></td></tr></tbody></table></div><dl class="details"><div class="details-item-container"><dt class="tag-source bold">Source</dt><dd class="tag-source"><ul><li><a href="plugins_uiSystem.js.html">plugins/uiSystem.js</a>, <a href="plugins_uiSystem.js.html#line104">line 104</a></li></ul></dd></div></dl><h3 class="name has-anchor" id="navigationMode"><span class="type-signature"></span>navigationMode<span class="type-signature"></span></h3><b class="subsection-title">Properties</b><div class="allow-overflow"><table class="props"><thead><tr><th>Type</th><th class="last">Description</th></tr></thead><tbody><tr><td class="type"><span class="param-type">boolean</span></td><td class="description last"><p>True if user last used navigation instead of mouse</p></td></tr></tbody></table></div><dl class="details"><div class="details-item-container"><dt class="tag-source bold">Source</dt><dd class="tag-source"><ul><li><a href="plugins_uiSystem.js.html">plugins/uiSystem.js</a>, <a href="plugins_uiSystem.js.html#line106">line 106</a></li></ul></dd></div></dl><h3 class="name has-anchor" id="navigationObject"><span class="type-signature"></span>navigationObject<span class="type-signature"></span></h3><b class="subsection-title">Properties</b><div class="allow-overflow"><table class="props"><thead><tr><th>Type</th><th class="last">Description</th></tr></thead><tbody><tr><td class="type"><span class="param-type">UIObject</span></td><td class="description last"><p>Object currently selected by navigation (gamepad or keyboard)</p></td></tr></tbody></table></div><dl class="details"><div class="details-item-container"><dt class="tag-source bold">Source</dt><dd class="tag-source"><ul><li><a href="plugins_uiSystem.js.html">plugins/uiSystem.js</a>, <a href="plugins_uiSystem.js.html#line98">line 98</a></li></ul></dd></div></dl><h3 class="name has-anchor" id="navigationTimer"><span class="type-signature"></span>navigationTimer<span class="type-signature"></span></h3><b class="subsection-title">Properties</b><div class="allow-overflow"><table class="props"><thead><tr><th>Type</th><th class="last">Description</th></tr></thead><tbody><tr><td class="type"><span class="param-type">Timer</span></td><td class="description last"><p>Cool down timer for navigation inputs</p></td></tr></tbody></table></div><dl class="details"><div class="details-item-container"><dt class="tag-source bold">Source</dt><dd class="tag-source"><ul><li><a href="plugins_uiSystem.js.html">plugins/uiSystem.js</a>, <a href="plugins_uiSystem.js.html#line100">line 100</a></li></ul></dd></div></dl><h3 class="name has-anchor" id="uiContext"><span class="type-signature"></span>uiContext<span class="type-signature"></span></h3><b class="subsection-title">Properties</b><div class="allow-overflow"><table class="props"><thead><tr><th>Type</th><th class="last">Description</th></tr></thead><tbody><tr><td class="type"><span class="param-type">CanvasRenderingContext2D</span> |<wbr> <span class="param-type">OffscreenCanvasRenderingContext2D</span></td><td class="description last"><p>Context to render UI elements to</p></td></tr></tbody></table></div><dl class="details"><div class="details-item-container"><dt class="tag-source bold">Source</dt><dd class="tag-source"><ul><li><a href="plugins_uiSystem.js.html">plugins/uiSystem.js</a>, <a href="plugins_uiSystem.js.html#line112">line 112</a></li></ul></dd></div></dl><h3 class="name has-anchor" id="uiObjects"><span class="type-signature"></span>uiObjects<span class="type-signature"></span></h3><b class="subsection-title">Properties</b><div class="allow-overflow"><table class="props"><thead><tr><th>Type</th><th class="last">Description</th></tr></thead><tbody><tr><td class="type"><span class="param-type">Array.&lt;UIObject></span></td><td class="description last"><p>List of all UI elements</p></td></tr></tbody></table></div><dl class="details"><div class="details-item-container"><dt class="tag-source bold">Source</dt><dd class="tag-source"><ul><li><a href="plugins_uiSystem.js.html">plugins/uiSystem.js</a>, <a href="plugins_uiSystem.js.html#line110">line 110</a></li></ul></dd></div></dl><h2 id="methods" class="subsection-title has-anchor">Methods</h2><h3 class="name has-anchor" id="drawLine"><span class="type-signature"></span>drawLine<span class="signature">(posA, posB, lineWidth<span class="signature-attributes">opt</span>, lineColor<span class="signature-attributes">opt</span>)</span></h3><div class="description"><p>Draw a line to the UI context</p></div><div class="method-member-container flex flex-col w-100 overflow-auto mt-20"><strong>Parameters:</strong><table class="params"><thead><tr><th>Name</th><th>Type</th><th>Attributes</th><th>Default</th><th class="last">Description</th></tr></thead><tbody><tr><td class="name"><code>posA</code></td><td class="type"><span class="param-type">Vector2</span></td><td class="attributes"></td><td class="default"></td><td class="description last"></td></tr><tr><td class="name"><code>posB</code></td><td class="type"><span class="param-type">Vector2</span></td><td class="attributes"></td><td class="default"></td><td class="description last"></td></tr><tr><td class="name"><code>lineWidth</code></td><td class="type"><span class="param-type">number</span></td><td class="attributes">&lt;optional><br></td><td class="default">uiSystem.defaultLineWidth</td><td class="description last"></td></tr><tr><td class="name"><code>lineColor</code></td><td class="type"><span class="param-type">Color</span></td><td class="attributes">&lt;optional><br></td><td class="default">uiSystem.defaultLineColor</td><td class="description last"></td></tr></tbody></table></div><dl class="details"><div class="details-item-container"><dt class="tag-source bold">Source</dt><dd class="tag-source"><ul><li><a href="plugins_uiSystem.js.html">plugins/uiSystem.js</a>, <a href="plugins_uiSystem.js.html#line336">line 336</a></li></ul></dd></div></dl><h3 class="name has-anchor" id="drawRect"><span class="type-signature"></span>drawRect<span class="signature">(pos, size, color<span class="signature-attributes">opt</span>, lineWidth<span class="signature-attributes">opt</span>, lineColor<span class="signature-attributes">opt</span>, cornerRadius<span class="signature-attributes">opt</span>, gradientColor<span class="signature-attributes">opt</span>, shadowColor<span class="signature-attributes">opt</span>, shadowBlur<span class="signature-attributes">opt</span>, shadowOffset<span class="signature-attributes">opt</span>)</span></h3><div class="description"><p>Draw a rectangle to the UI context</p></div><div class="method-member-container flex flex-col w-100 overflow-auto mt-20"><strong>Parameters:</strong><table class="params"><thead><tr><th>Name</th><th>Type</th><th>Attributes</th><th>Default</th><th class="last">Description</th></tr></thead><tbody><tr><td class="name"><code>pos</code></td><td class="type"><span class="param-type">Vector2</span></td><td class="attributes"></td><td class="default"></td><td class="description last"></td></tr><tr><td class="name"><code>size</code></td><td class="type"><span class="param-type">Vector2</span></td><td class="attributes"></td><td class="default"></td><td class="description last"></td></tr><tr><td class="name"><code>color</code></td><td class="type"><span class="param-type">Color</span></td><td class="attributes">&lt;optional><br></td><td class="default"></td><td class="description last"></td></tr><tr><td class="name"><code>lineWidth</code></td><td class="type"><span class="param-type">number</span></td><td class="attributes">&lt;optional><br></td><td class="default">0</td><td class="description last"></td></tr><tr><td class="name"><code>lineColor</code></td><td class="type"><span class="param-type">Color</span></td><td class="attributes">&lt;optional><br></td><td class="default"></td><td class="description last"></td></tr><tr><td class="name"><code>cornerRadius</code></td><td class="type"><span class="param-type">number</span></td><td class="attributes">&lt;optional><br></td><td class="default">0</td><td class="description last"></td></tr><tr><td class="name"><code>gradientColor</code></td><td class="type"><span class="param-type">Color</span></td><td class="attributes">&lt;optional><br></td><td class="default"></td><td class="description last"></td></tr><tr><td class="name"><code>shadowColor</code></td><td class="type"><span class="param-type">Color</span></td><td class="attributes">&lt;optional><br></td><td class="default"></td><td class="description last"></td></tr><tr><td class="name"><code>shadowBlur</code></td><td class="type"><span class="param-type">number</span></td><td class="attributes">&lt;optional><br></td><td class="default">0</td><td class="description last"></td></tr><tr><td class="name"><code>shadowOffset</code></td><td class="type"><span class="param-type">Color</span></td><td class="attributes">&lt;optional><br></td><td class="default"></td><td class="description last"></td></tr></tbody></table></div><dl class="details"><div class="details-item-container"><dt class="tag-source bold">Source</dt><dd class="tag-source"><ul><li><a href="plugins_uiSystem.js.html">plugins/uiSystem.js</a>, <a href="plugins_uiSystem.js.html#line285">line 285</a></li></ul></dd></div></dl><h3 class="name has-anchor" id="drawText"><span class="type-signature"></span>drawText<span class="signature">(text, pos, size, color<span class="signature-attributes">opt</span>, lineWidth<span class="signature-attributes">opt</span>, lineColor<span class="signature-attributes">opt</span>, align<span class="signature-attributes">opt</span>, font<span class="signature-attributes">opt</span>, fontStyle<span class="signature-attributes">opt</span>, applyMaxWidth<span class="signature-attributes">opt</span>, textShadow<span class="signature-attributes">opt</span>, shadowColor<span class="signature-attributes">opt</span>, shadowBlur<span class="signature-attributes">opt</span>, shadowOffset<span class="signature-attributes">opt</span>)</span></h3><div class="description"><p>Draw text to the UI context</p></div><div class="method-member-container flex flex-col w-100 overflow-auto mt-20"><strong>Parameters:</strong><table class="params"><thead><tr><th>Name</th><th>Type</th><th>Attributes</th><th>Default</th><th class="last">Description</th></tr></thead><tbody><tr><td class="name"><code>text</code></td><td class="type"><span class="param-type">string</span></td><td class="attributes"></td><td class="default"></td><td class="description last"></td></tr><tr><td class="name"><code>pos</code></td><td class="type"><span class="param-type">Vector2</span></td><td class="attributes"></td><td class="default"></td><td class="description last"></td></tr><tr><td class="name"><code>size</code></td><td class="type"><span class="param-type">Vector2</span></td><td class="attributes"></td><td class="default"></td><td class="description last"></td></tr><tr><td class="name"><code>color</code></td><td class="type"><span class="param-type">Color</span></td><td class="attributes">&lt;optional><br></td><td class="default">uiSystem.defaultColor</td><td class="description last"></td></tr><tr><td class="name"><code>lineWidth</code></td><td class="type"><span class="param-type">number</span></td><td class="attributes">&lt;optional><br></td><td class="default">uiSystem.defaultLineWidth</td><td class="description last"></td></tr><tr><td class="name"><code>lineColor</code></td><td class="type"><span class="param-type">Color</span></td><td class="attributes">&lt;optional><br></td><td class="default">uiSystem.defaultLineColor</td><td class="description last"></td></tr><tr><td class="name"><code>align</code></td><td class="type"><span class="param-type">string</span></td><td class="attributes">&lt;optional><br></td><td class="default">center</td><td class="description last"></td></tr><tr><td class="name"><code>font</code></td><td class="type"><span class="param-type">string</span></td><td class="attributes">&lt;optional><br></td><td class="default">uiSystem.defaultFont</td><td class="description last"></td></tr><tr><td class="name"><code>fontStyle</code></td><td class="type"><span class="param-type">string</span></td><td class="attributes">&lt;optional><br></td><td class="default"></td><td class="description last"></td></tr><tr><td class="name"><code>applyMaxWidth</code></td><td class="type"><span class="param-type">boolean</span></td><td class="attributes">&lt;optional><br></td><td class="default">true</td><td class="description last"></td></tr><tr><td class="name"><code>textShadow</code></td><td class="type"><span class="param-type">Vector2</span></td><td class="attributes">&lt;optional><br></td><td class="default"></td><td class="description last"></td></tr><tr><td class="name"><code>shadowColor</code></td><td class="type"><span class="param-type">Color</span></td><td class="attributes">&lt;optional><br></td><td class="default"></td><td class="description last"></td></tr><tr><td class="name"><code>shadowBlur</code></td><td class="type"><span class="param-type">number</span></td><td class="attributes">&lt;optional><br></td><td class="default">0</td><td class="description last"></td></tr><tr><td class="name"><code>shadowOffset</code></td><td class="type"><span class="param-type">Color</span></td><td class="attributes">&lt;optional><br></td><td class="default"></td><td class="description last"></td></tr></tbody></table></div><dl class="details"><div class="details-item-container"><dt class="tag-source bold">Source</dt><dd class="tag-source"><ul><li><a href="plugins_uiSystem.js.html">plugins/uiSystem.js</a>, <a href="plugins_uiSystem.js.html#line393">line 393</a></li></ul></dd></div></dl><h3 class="name has-anchor" id="drawTile"><span class="type-signature"></span>drawTile<span class="signature">(pos, size, tileInfo, color<span class="signature-attributes">opt</span>, angle<span class="signature-attributes">opt</span>, mirror<span class="signature-attributes">opt</span>, shadowColor<span class="signature-attributes">opt</span>, shadowBlur<span class="signature-attributes">opt</span>, shadowOffset<span class="signature-attributes">opt</span>)</span></h3><div class="description"><p>Draw a tile to the UI context</p></div><div class="method-member-container flex flex-col w-100 overflow-auto mt-20"><strong>Parameters:</strong><table class="params"><thead><tr><th>Name</th><th>Type</th><th>Attributes</th><th>Default</th><th class="last">Description</th></tr></thead><tbody><tr><td class="name"><code>pos</code></td><td class="type"><span class="param-type">Vector2</span></td><td class="attributes"></td><td class="default"></td><td class="description last"></td></tr><tr><td class="name"><code>size</code></td><td class="type"><span class="param-type">Vector2</span></td><td class="attributes"></td><td class="default"></td><td class="description last"></td></tr><tr><td class="name"><code>tileInfo</code></td><td class="type"><span class="param-type">TileInfo</span></td><td class="attributes"></td><td class="default"></td><td class="description last"></td></tr><tr><td class="name"><code>color</code></td><td class="type"><span class="param-type">Color</span></td><td class="attributes">&lt;optional><br></td><td class="default">uiSystem.defaultColor</td><td class="description last"></td></tr><tr><td class="name"><code>angle</code></td><td class="type"><span class="param-type">number</span></td><td class="attributes">&lt;optional><br></td><td class="default">0</td><td class="description last"></td></tr><tr><td class="name"><code>mirror</code></td><td class="type"><span class="param-type">boolean</span></td><td class="attributes">&lt;optional><br></td><td class="default">false</td><td class="description last"></td></tr><tr><td class="name"><code>shadowColor</code></td><td class="type"><span class="param-type">Color</span></td><td class="attributes">&lt;optional><br></td><td class="default"></td><td class="description last"></td></tr><tr><td class="name"><code>shadowBlur</code></td><td class="type"><span class="param-type">number</span></td><td class="attributes">&lt;optional><br></td><td class="default">0</td><td class="description last"></td></tr><tr><td class="name"><code>shadowOffset</code></td><td class="type"><span class="param-type">Color</span></td><td class="attributes">&lt;optional><br></td><td class="default"></td><td class="description last"></td></tr></tbody></table></div><dl class="details"><div class="details-item-container"><dt class="tag-source bold">Source</dt><dd class="tag-source"><ul><li><a href="plugins_uiSystem.js.html">plugins/uiSystem.js</a>, <a href="plugins_uiSystem.js.html#line362">line 362</a></li></ul></dd></div></dl><h3 class="name has-anchor" id="getNavigableObjects"><span class="type-signature"></span>getNavigableObjects<span class="signature">()</span><span class="type-signature"> &rarr; {Array.&lt;UIObject>}</span></h3><div class="description"><p>Get all navigable UI objects sorted by navigationIndex</p></div><dl class="details"><div class="details-item-container"><dt class="tag-source bold">Source</dt><dd class="tag-source"><ul><li><a href="plugins_uiSystem.js.html">plugins/uiSystem.js</a>, <a href="plugins_uiSystem.js.html#line470">line 470</a></li></ul></dd></div></dl><div class="method-member-container mt-20"><strong>Returns:</strong><dl class="param-type"><dt>Type:&nbsp;</dt><dd><span class="param-type">Array.&lt;UIObject></span></dd></dl></div><h3 class="name has-anchor" id="getNavigationDirection"><span class="type-signature"></span>getNavigationDirection<span class="signature">()</span><span class="type-signature"> &rarr; {number}</span></h3><div class="description"><p>Get navigation direction from gamepad or keyboard</p></div><dl class="details"><div class="details-item-container"><dt class="tag-source bold">Source</dt><dd class="tag-source"><ul><li><a href="plugins_uiSystem.js.html">plugins/uiSystem.js</a>, <a href="plugins_uiSystem.js.html#line500">line 500</a></li></ul></dd></div></dl><div class="method-member-container mt-20"><strong>Returns:</strong><dl class="param-type"><dt>Type:&nbsp;</dt><dd><span class="param-type">number</span></dd></dl></div><h3 class="name has-anchor" id="getNavigationOtherDirection"><span class="type-signature"></span>getNavigationOtherDirection<span class="signature">()</span><span class="type-signature"> &rarr; {Vector2}</span></h3><div class="description"><p>Get other axis navigation direction from gamepad or keyboard</p></div><dl class="details"><div class="details-item-container"><dt class="tag-source bold">Source</dt><dd class="tag-source"><ul><li><a href="plugins_uiSystem.js.html">plugins/uiSystem.js</a>, <a href="plugins_uiSystem.js.html#line525">line 525</a></li></ul></dd></div></dl><div class="method-member-container mt-20"><strong>Returns:</strong><dl class="param-type"><dt>Type:&nbsp;</dt><dd><span class="param-type">Vector2</span></dd></dl></div><h3 class="name has-anchor" id="getNavigationWasPressed"><span class="type-signature"></span>getNavigationWasPressed<span class="signature">()</span><span class="type-signature"> &rarr; {boolean}</span></h3><div class="description"><p>Get if navigation button was pressed from gamepad or keyboard</p></div><dl class="details"><div class="details-item-container"><dt class="tag-source bold">Source</dt><dd class="tag-source"><ul><li><a href="plugins_uiSystem.js.html">plugins/uiSystem.js</a>, <a href="plugins_uiSystem.js.html#line544">line 544</a></li></ul></dd></div></dl><div class="method-member-container mt-20"><strong>Returns:</strong><dl class="param-type"><dt>Type:&nbsp;</dt><dd><span class="param-type">boolean</span></dd></dl></div><h3 class="name has-anchor" id="screenToNative"><span class="type-signature"></span>screenToNative<span class="signature">(pos)</span><span class="type-signature"> &rarr; {Vector2}</span></h3><div class="description"><p>Convert a screen space position to native UI position</p></div><div class="method-member-container flex flex-col w-100 overflow-auto mt-20"><strong>Parameters:</strong><table class="params"><thead><tr><th>Name</th><th>Type</th><th class="last">Description</th></tr></thead><tbody><tr><td class="name"><code>pos</code></td><td class="type"><span class="param-type">Vector2</span></td><td class="description last"></td></tr></tbody></table></div><dl class="details"><div class="details-item-container"><dt class="tag-source bold">Source</dt><dd class="tag-source"><ul><li><a href="plugins_uiSystem.js.html">plugins/uiSystem.js</a>, <a href="plugins_uiSystem.js.html#line441">line 441</a></li></ul></dd></div></dl><div class="method-member-container mt-20"><strong>Returns:</strong><dl class="param-type"><dt>Type:&nbsp;</dt><dd><span class="param-type">Vector2</span></dd></dl></div><h3 class="name has-anchor" id="setupDragAndDrop"><span class="type-signature"></span>setupDragAndDrop<span class="signature">(onDrop<span class="signature-attributes">opt</span>, onDragEnter<span class="signature-attributes">opt</span>, onDragLeave<span class="signature-attributes">opt</span>, onDragOver<span class="signature-attributes">opt</span>)</span></h3><div class="description"><p>Setup drag and drop event handlers Automatically prevents defaults and calls the given functions</p></div><div class="method-member-container flex flex-col w-100 overflow-auto mt-20"><strong>Parameters:</strong><table class="params"><thead><tr><th>Name</th><th>Type</th><th>Attributes</th><th class="last">Description</th></tr></thead><tbody><tr><td class="name"><code>onDrop</code></td><td class="type"><span class="param-type">DragAndDropCallback</span></td><td class="attributes">&lt;optional><br></td><td class="description last"><p>when a file is dropped</p></td></tr><tr><td class="name"><code>onDragEnter</code></td><td class="type"><span class="param-type">DragAndDropCallback</span></td><td class="attributes">&lt;optional><br></td><td class="description last"><p>when a file is dragged onto the window</p></td></tr><tr><td class="name"><code>onDragLeave</code></td><td class="type"><span class="param-type">DragAndDropCallback</span></td><td class="attributes">&lt;optional><br></td><td class="description last"><p>when a file is dragged off the window</p></td></tr><tr><td class="name"><code>onDragOver</code></td><td class="type"><span class="param-type">DragAndDropCallback</span></td><td class="attributes">&lt;optional><br></td><td class="description last"><p>continuously when dragging over</p></td></tr></tbody></table></div><dl class="details"><div class="details-item-container"><dt class="tag-source bold">Source</dt><dd class="tag-source"><ul><li><a href="plugins_uiSystem.js.html">plugins/uiSystem.js</a>, <a href="plugins_uiSystem.js.html#line425">line 425</a></li></ul></dd></div></dl><h3 class="name has-anchor" id="showConfirmDialog"><span class="type-signature"></span>showConfirmDialog<span class="signature">(text<span class="signature-attributes">opt</span>, yesCallback<span class="signature-attributes">opt</span>, noCallback<span class="signature-attributes">opt</span>, size<span class="signature-attributes">opt</span>, exitKey<span class="signature-attributes">opt</span>)</span><span class="type-signature"> &rarr; {UIObject}</span></h3><div class="description"><p>Show a confirmation dialog with Yes/No buttons Centers the dialog on the screen with darkened background</p></div><div class="method-member-container flex flex-col w-100 overflow-auto mt-20"><strong>Parameters:</strong><table class="params"><thead><tr><th>Name</th><th>Type</th><th>Attributes</th><th>Default</th><th class="last">Description</th></tr></thead><tbody><tr><td class="name"><code>text</code></td><td class="type"><span class="param-type">string</span></td><td class="attributes">&lt;optional><br></td><td class="default">Are you sure?</td><td class="description last"><p>The message to display</p></td></tr><tr><td class="name"><code>yesCallback</code></td><td class="type"><span class="param-type">function</span></td><td class="attributes">&lt;optional><br></td><td class="default"></td><td class="description last"><p>Called when Yes is clicked</p></td></tr><tr><td class="name"><code>noCallback</code></td><td class="type"><span class="param-type">function</span></td><td class="attributes">&lt;optional><br></td><td class="default"></td><td class="description last"><p>Called when No is clicked</p></td></tr><tr><td class="name"><code>size</code></td><td class="type"><span class="param-type">Vector2</span></td><td class="attributes">&lt;optional><br></td><td class="default"></td><td class="description last"><p>Size of the confirmation dialog</p></td></tr><tr><td class="name"><code>exitKey</code></td><td class="type"><span class="param-type">string</span></td><td class="attributes">&lt;optional><br></td><td class="default">Escape</td><td class="description last"><p>Key that can exit the menu</p></td></tr></tbody></table></div><dl class="details"><div class="details-item-container"><dt class="tag-source bold">Source</dt><dd class="tag-source"><ul><li><a href="plugins_uiSystem.js.html">plugins/uiSystem.js</a>, <a href="plugins_uiSystem.js.html#line559">line 559</a></li></ul></dd></div></dl><div class="method-member-container mt-20"><strong>Returns:</strong><div class="param-desc"><p>The confirmation menu object</p></div><dl class="param-type"><dt>Type:&nbsp;</dt><dd><span class="param-type">UIObject</span></dd></dl></div></article></section><footer class="footer" id="PeOAagUepe"><div class="wrapper"><a href="https://github.com/KilledByAPixel/LittleJS">LittleJS - MIT License - Copyright 2021 Frank Force</a></div></footer></div></div></div><div class="search-container" id="PkfLWpAbet" style="display:none"><div class="wrapper" id="iCxFxjkHbP"><button class="icon-button search-close-button" id="VjLlGakifb" aria-label="close search"><svg><use xlink:href="#close-icon"></use></svg></button><div class="search-box-c"><svg><use 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